Estolas, Josefina V. <br/><br/>Fundamentals of research /  - Rev ed.  - Manila :  EDMBMM,  1973.  - ix, 373 p.  col. ill.; 23 cm. <br/><br/><label>Subjects--Topical Terms: </label><br/>Education<br/><br/><label>LC Class. No.: </label>LB1731  / .E81 1973